CD2231

Manufacturer Part NumberCD2231
DescriptionCD2231 Intelligent Two-channel Lan And Wan Communications Controller
ManufacturerIntel Corporation
CD2231 datasheet
 


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Intelligent Two-Channel LAN and WAN Communications Controller — CD2231
4.1.6.1
Modem Interrupt Registers
Name
Description
MPILR
Modem Priority Interrupt Level Register
MIR
Modem Interrupt Register
MISR
Modem (/Timer) Interrupt Status Register
MEOIR
Modem End of Interrupt Register
4.1.7
DMA Registers
Name
Description
DMR
DMA Mode Register
BERCNT
Bus Error Retry Count
DMABSTS
DMA Buffer Status
4.1.7.1
DMA Receive Registers
Name
Description
ARBADRL
A Receive Buffer Address Lower
ARBADRU
A Receive Buffer Address Upper
BRBADRL
B Receive Buffer Address Lower
BRBADRU
B Receive Buffer Address Upper
ARBCNT
A Receive Buffer Byte Count
BRBCNT
B Receive Buffer Byte Count
ARBSTS
A Receive Buffer Status
BRBSTS
B Receive Buffer Status
RCBADRL
Receive Current Buffer Address Lower
RCBADRU
Receive Current Buffer Address Upper
4.1.7.2
DMA Transmit Registers
Name
Description
ATBADRL
A Transmit Buffer Address Lower
ATBADRU
A Transmit Buffer Address Upper
BTBADRL
B Transmit Buffer Address Lower
BTBADRU
B Transmit Buffer Address Upper
ATBCNT
A Transmit Buffer Byte Count
BTBCNT
B Transmit Buffer Byte Count
Datasheet
Addr.
2
3
INT
MOT
Size
1
Mode
G
E1
E3
B
G
ED
EF
B
G
88
8B
B
G
85
86
B
Addr.
2
3
INT
MOT
Size
1
Mode
G
F4
F6
B
G
8D
8E
B
P
1A
19
B
Addr.
2
3
INT
MOT
Size
1
Mode
P
40
42
W
P
42
40
W
P
44
46
W
P
46
44
W
P
48
4A
W
P
4A
48
W
P
4C
4F
B
P
4D
4E
B
P
3C
3E
W
P
3E
3C
W
Addr.
2
3
INT
MOT
Size
1
Mode
P
50
52
W
P
52
50
W
P
54
56
W
P
56
54
W
P
58
5A
W
P
5A
58
W
Access
Page
R/W
137
R
137
R
138
W
139
Access
Page
W
139
R/W
140
R
140
Access
Page
R/W
141
R/W
142
R/W
142
R/W
142
R/W
143
R/W
143
R/W
143
R/W
144
R
144
R
145
Access
Page
R/W
145
R/W
146
R/W
146
R/W
146
R/W
147
R/W
147
23